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Define and use PRINTF_F_PTR

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GCCs older than 3.1 understand __attribute__(printf(...)), but only
with functions; it doesn't work with function pointers. This change
uses PRINTF_F_PTR to remove the attribute from two function pointers.

This change establishes GCC 3.0 as the minimum version to build
NetHack. Older versions have trouble with the variadic macros and
variable declarations in mid-block.
This commit is contained in:
Ray Chason
2022-11-03 19:33:30 -04:00
parent f6b3b968e7
commit 5eaa162c82
3 changed files with 9 additions and 3 deletions
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6
include/tradstdc.h
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@@ -401,6 +401,9 @@ typedef genericptr genericptr_t; /* (void *) or (char *) */
#if (__GNUC__ >= 2) && !defined(USE_OLDARGS)
#define PRINTF_F(f, v) __attribute__((format(printf, f, v)))
#endif
#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
#define PRINTF_F_PTR(f, v) PRINTF_F(f, v)
#endif
#if __GNUC__ >= 3
#define UNUSED __attribute__((unused))
#define NORETURN __attribute__((noreturn))
@@ -419,6 +422,9 @@ typedef genericptr genericptr_t; /* (void *) or (char *) */
#ifndef PRINTF_F
#define PRINTF_F(f, v)
#endif
#ifndef PRINTF_F_PTR
#define PRINTF_F_PTR(f, v)
#endif
#ifndef UNUSED
#define UNUSED
#endif